P0137 2013 Toyota RAV4 Code - Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2
Quick Answer
In order to obtain a high purification rate of the Carbon Monoxide (CO), Hydrocarbon (HC), and Nitrogen Oxide (NOx) components in the exhaust gas, a Three-Way Catalytic Converter (TWC) is used. Common causes include Faulty Oxygen Sensor Bank 1 Sensor 2, Oxygen Sensor Bank 1 Sensor 2 harness is open or shorted, Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0137 2013 Toyota RAV4 indicates Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Oxygen Sensor Bank 1 Sensor 2, Oxygen Sensor Bank 1 Sensor 2 harness is open or shorted, Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0137 2013 Toyota RAV4 Description
The heated oxygen sensor is located behind the TWC and detects the oxygen concentration in the exhaust gas. Since the sensor is integrated with the heater that heats the sensing portion, it is possible to detect the oxygen concentration even when the intake air volume is low (the exhaust gas temperature is low).
When the air-fuel ratio becomes lean, the oxygen concentration in the exhaust gas is high. The heated oxygen sensor informs the ECM that the post-TWC air-fuel ratio is lean (low voltage, i.e. less than 0.45 V).
Conversely, when the air-fuel ratio is richer than the stoichiometric air-fuel level, the oxygen concentration in the exhaust gas is low. The heated oxygen sensor informs the ECM that the post-TWC air-fuel ratio is rich (high voltage, i.e. more than 0.45 V). The heated oxygen sensor has the property of changing its output voltage drastically when the air-fuel ratio is close to the stoichiometric level.
The ECM uses the supplementary information from the heated oxygen sensor to determine whether the air-fuel ratio after the TWC is rich or lean and adjusts the fuel injection duration accordingly. Thus, if the heated oxygen sensor is working improperly due to internal malfunctions, the ECM is unable to compensate for deviations in the primary air-fuel ratio control.
The impedance cannot be measured using an ohmmeter. Diagnostic Trouble Code (DTC) P0137 indicates an open or short circuit in the heated oxygen sensor (2 driving cycles). The ECM stores the DTC when the impedance of the sensor exceeds the threshold 15 kΩ.
What are the Possible Causes of the DTC P0137 2013 Toyota RAV4?
- Faulty Oxygen Sensor Bank 1 Sensor 2
- Oxygen Sensor Bank 1 Sensor 2 harness is open or shorted
- Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection
- Gas leak from exhaust system
How to Fix the DTC P0137 2013 Toyota RAV4?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0137 2013 Toyota RAV4 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0137 2013 Toyota RAV4 Code
1. What does the OBDII code P0137 mean on a 2013 Toyota RAV4?
P0137 indicates "Oxygen Sensor Circuit Low Voltage Bank 1 Sensor 2," meaning the downstream oxygen sensor is detecting a voltage lower than expected, which can affect engine performance and emissions.
2. What are the symptoms of code P0137 in a 2013 Toyota RAV4?
Common symptoms include the check engine light turning on, reduced fuel efficiency, poor engine performance, and possibly a failed emissions test.
3. What causes the P0137 code in a 2013 Toyota RAV4?
Potential causes include a faulty Bank 1 Sensor 2 oxygen sensor, damaged wiring or connectors, an exhaust leak, or a malfunctioning engine control module (ECM).
4. How do I locate Bank 1 Sensor 2 on a 2013 Toyota RAV4?
Bank 1 Sensor 2 is the oxygen sensor located downstream of the catalytic converter on the side of the engine with cylinder 1.
5. Can driving with a P0137 code damage my 2013 Toyota RAV4?
Driving with this code can lead to increased emissions and reduced fuel efficiency, but it is unlikely to cause immediate damage unless accompanied by other issues.
6. How is the P0137 code diagnosed on a 2013 Toyota RAV4?
A technician will use a scan tool to confirm the code, inspect the oxygen sensor and its wiring for damage, and check for exhaust leaks or other related issues.
7. How do I fix the P0137 code on a 2013 Toyota RAV4?
Repairs may include replacing the Bank 1 Sensor 2 oxygen sensor, repairing damaged wiring or connectors, fixing exhaust leaks, or updating the ECM software if necessary.
8. How much does it cost to fix a P0137 code on a 2013 Toyota RAV4?
Replacing the oxygen sensor typically costs $150–$300, including parts and labor, but costs may vary depending on the underlying issue.
9. Can a dirty air filter cause the P0137 code on a 2013 Toyota RAV4?
A dirty air filter is unlikely to directly cause P0137, but it can affect overall engine performance and emissions, potentially contributing to sensor issues.
10. Will clearing the P0137 code solve the problem on a 2013 Toyota RAV4?
Clearing the code may turn off the check engine light temporarily, but if the underlying issue is not addressed, the code will likely return.
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